Lightly sketch the basic fish shape on your rock using a pencil. Focus on outlining the head, body, and tail, keeping your lines simple so you can adjust them as needed.
Add overlapping scales along the body for texture, then begin filling in the main section with a bold color—here, a bright green—to make your fish pop.
Begin filling in the fish scales with a mix of bright colors. Alternate your shades to create a lively pattern, and let each layer dry before moving on.
Continue coloring the remaining scales, experimenting with different hues to add contrast and depth. Be sure to keep the edges defined for a crisp, eye-catching design.
Use a metallic or gold paint pen to outline sections of the fish and add a subtle shimmer. This extra detail highlights each scale and ties the colors together.
Go over the fish’s edges and key features with a black paint marker to define the shape. This final outline makes the design pop and gives it a clean, polished finish.
Fill in the fish’s face with your chosen color and add any finishing details, like extra highlights or subtle shading around the scales, to bring out the design’s depth.
Draw in the eye with a paint pen or marker, and add a small white dot for a lively sparkle. Once everything is dry, seal your rock if desired to protect your new fish friend for the long haul!